Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
16 + 20 = ______
32 + 20 = ______
32 + 10 = ______
9 × 10 = ______
5 × 10 = ______
67 − 10 = ______
1 × 10 = ______
8 × 10 = ______
89 + 10 = ______
3 × 10 = ______
34 + 20 = ______
6 × 10 = ______
16 + 10 = ______
25 + 10 = ______
81 + 20 = ______
43 − 10 = ______
88 + 20 = ______
76 + 20 = ______
60 − 10 = ______
23 + 20 = ______
